Add setup and build guide to the readme

README.md

@@ -1,3 +1,70 @@
 # Plugins for micromissiles-unity
 
 This repository contains plugins for the micromissiles simulator found here: https://github.com/PisterLab/micromissiles-unity.
+
+## Prerequisites
+
+- A C++ compiler (GCC, Clang, or MSVC)
+- Git
+- Python (for Bazel)
+- Bazel 8.0.0 (or Bazelisk)
+
+## Installing Bazel
+
+This project requires Bazel version 8.0.0.
+
+For detailed installation instructions for your platform (Windows, macOS, Linux), please refer to the official Bazel documentation: https://bazel.build/install.
+
+A few important notes:
+
+- Bazelisk is recommended as it automatically manages Bazel versions based on the `.bazelversion` file.
+- On Windows, you will need additional components like MSYS2 and Visual Studio Build Tools.
+- You can verify your installation with `bazel version`.
+
+## Building the Project
+
+1. Clone the repository:
+   ```bash
+   git clone https://github.com/PisterLab/micromissiles-unity-plugins.git
+   cd micromissiles-unity-plugins
+   ```
+
+2. Build all plugins:
+   ```bash
+   bazel build //...
+   ```
+
+3. Build specific plugins:
+   ```bash
+   # Build the assignment plugin.
+   bazel build //:assignment
+
+   # Build the example plugin.
+   bazel build //:example
+
+   # Build and package all plugins into a tarball.
+   bazel build //:plugins
+   ```
+
+4. Run tests:
+   ```
+   bazel test //...
+   ```
+
+## Project Structure
+
+- `/assignment`: Contains the assignment plugin implementation.
+- `/example`: Contains an example plugin implementation.
+- `/base`: Common base utilities.
+
+## Output Files
+
+After building, the compiled shared libraries can be found in the `bazel-bin` directory. The packaged plugins tarball will be at `bazel-bin/plugins.tar.gz`.
+
+## Integrating with Unity
+
+To use these plugins with the micromissiles Unity project:
+
+1. Build the plugins using the instructions above.
+2. Extract the contents of `bazel-bin/plugins.tar.gz`.
+3. Copy the shared libraries (`.dll`, `.dylib`, or `.so` files) to the appropriate plugins directory in the Unity project.